Insulating compound



UNITED STATES PATENT OFFICE.

LOUIS HONIG, OF ST. LOUIS, MISSOURI.

INSULATING COMPOUND.

SPECIFICATION forming part'of Letters Patent No. 568,683, dated September 29, 1896. Application filed June 24, 1896. Serial No. 596,789. (No specimens.)

To all whom it may concern:

Be it known that I, LOUIS HONIG, of the city of St. Louis, State of Missouri, have invented certain new and useful Improvements in Insulating Compounds, of which the following is a full, clear, and exact description.

Myimproved insulating compound consists of the following ingredients combined in approximately the proportions stated, viz: alcohol, thirty parts; gumshellac, twenty-five parts; wheat-flour, twenty parts; powdered asbestos, twenty parts; glue, two parts; varnish, two parts; glycerin, one part. The different ingredients are mixed and commingled in the following manner: The gumshellac is cut or dissolved with alcohol and then a sufficient quantity of powdered asbestos is mixed with the alcohol. Then the glycerin and glue are added, after which the desired quantity of varnish and wheat-flour are added to the mixture and the whole mass thoroughly commingled.

The compound is applied with a brush.

I have found by experience that a compound thus produced is unexcelled for the purpose of winding lightning-arresters and fuse-boxes, in setting up rheostats, and in painting of brush holder yokes, switchboards, conduits, iron and wood poles, connections,moldings,wires, cut-out boxes,lamp hoods, transformers, and in fact anywhere that the protection of insulation is needed.

The relative proportion of the different ingredients may be varied to some extent, ac-

cording to the different conditions under which it is to be used.

The wheat-flour is addedto the mixture in any desired quantity for the purpose of giving it a body, and of course the amount of wheat-flour required for this purpose depends largely upon the amount of body desired. The varnish may be entirely omitted, or the quantity may be varied to suit the circumstances, as it serves to give the work a finished appearance. The glycerin tends to make the mixture run smooth, and the quantity used may be varied to suit the conditions and taste of the user. Glue has a tendency to make the compound tough.

In winding armatures with my improved insulating compound it is not necessary to use fine linen and mica, but ordinary cheesecloth will answer every purpose and do a bet I ter job than has heretofore been done with the old compounds in connection with linen and mica.

I claim 1. The herein -described insulating compound, consisting of alcohol, shellac, powdered asbestos, glycerin, glue and wheat-flour in approximately the proportions described.

2. The herein-described insulating compound, consisting of alcohol, shellac, wheatfiour, powdered asbestos, glue, varnish and glycerin in the proportions substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

LOUIS HONIG.

Witnesses:

EDWARD E. LONGAN, MAUD GRIFFIN. 

